French doors used to rely on flimsy, factory-installed latches that offered little more than a suggestion of privacy. Modern security has shifted toward heavy-duty reinforcements that physically tie the two door handles together to stop intruders.
Selecting the Best French Door Security Locks requires understanding how these mechanisms anchor against forced entry. You will find that the right choice creates a solid barrier against kick-ins. Keep reading to see how these devices secure your home.
Key Takeaways
- Prioritize models made from solid metal or reinforced aluminum to ensure the device cannot be easily bent or snapped under pressure.
- Check the width of your door handles or knobs against the adjustable range of the lock to ensure a proper fit.
- Choose a keyed locking mode if you require the ability to secure the door from the outside or prevent unauthorized access by children.
- Verify that the installation does not require permanent modifications to your door frame if you prefer a renter-friendly solution.
- Look for a unibody construction design to minimize weak points that could fail during a high-force impact.
| Best Overall Security |  |
Adjustable Double Door French Lock | Simple adjustable mechanism | Effective childproof design | Sleek black finish | View on Amazon | Read Review |
| Robust Metal Construction |  |
All-Metal French Door Barricade | Sturdy metal build | Includes storage pouch | Secure handle-to-handle fit | View on Amazon | Read Review |
| Best Value Multi-Pack | Double Set French Door Barricades | Two locks included | Heavy duty construction | Easy to install | View on Amazon | Read Review | |
| Kick-In Resistant Shield | SecurityMan Unibody Aluminum Door Lock | Solid aluminum construction | High kick-in resistance | Adjustable frame length | View on Amazon | Read Review | |
| Flexible Locking Modes | Heavy-Duty French Door Barricade | Keyed and keyless modes | Sturdy metal frame | Versatile handle compatibility | View on Amazon | Read Review | |
| Best Discreet Hardware |  |
Alise Stainless Steel Gate Latch | Rust-resistant stainless steel | Discreet visual profile | High security latch | View on Amazon | Read Review |
| Top Professional Standard |  |
PATLOCK Police Approved Lock | Police approved security | Tool-free operation | High-visibility deterrent | View on Amazon | Read Review |
| Best Versatile Fit | Adjustable Double Door Security Lock | Fits various knob widths | Prevents forced entry | Easy to adjust | View on Amazon | Read Review | |
| Best Base Security |  |
Aluminum Alloy Door Brace | Sturdy aluminum alloy | Sleek dark finish | Secure base mounting | View on Amazon | Read Review |
| Best Childproof Reinforcement |  |
AST Keyed French Door Lockout | Childproof design | Keyed security cylinder | Sleek matte finish | View on Amazon | Read Review |
More Details on Our Top Picks
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Adjustable Double Door French Lock
If you want a reliable way to keep your French doors shut, this adjustable model is the most versatile option on the market. It fits securely between your door handles, effectively preventing anyone from manipulating the mechanism or prying the doors open from the outside.
It is particularly well-suited for households needing a childproof barrier that remains simple for adults to operate. While the black finish looks sleek, keep in mind that the adjustment range depends on your specific handle spacing, so measure before you commit.
- Lock Type:Adjustable Barricade
- Material:Metal
- Adjustable Range:Varies by handle width
- Mounting Style:Handle-to-handle
- Package Quantity:1
- Additional Feature:Prevents lock picking attempts
- Additional Feature:Minimalist visual profile
- Additional Feature:Quick installation process
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All-Metal French Door Barricade
When you prioritize durable hardware over all else, this all-metal barricade is a solid choice. It grips both handles firmly to create a rigid link that stops the doors from swinging inward, making it a strong deterrent against forced entry.
The included storage pouch is a thoughtful addition for when the lock is not in use. Just ensure your handles are sturdy enough to support the locking tension, as this device exerts pressure directly on your door hardware.
- Lock Type:Security Barricade
- Material:All-metal
- Mounting Style:Handle-to-handle
- Package Quantity:1
- Additional Feature:Keyed locking mechanism
- Additional Feature:Fits various lever styles
- Additional Feature:Compact storage design
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Double Set French Door Barricades
Getting two locks in one box is a smart move if you have a pair of French doors that see frequent activity. These metal bars work by bracing the handles together, which provides a physical barrier that is difficult for intruders to bypass.
These are excellent for homeowners who want to secure multiple entry points without buying separate kits. Be aware that the metal construction adds a bit of weight, so be sure your handles are mounted securely to the door frame.
- Lock Type:Security Barricade
- Material:Metal
- Mounting Style:Handle-to-handle
- Package Quantity:2
- Additional Feature:Simple manual locking
- Additional Feature:Works with levers or knobs
- Additional Feature:Durable reinforced design
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SecurityMan Unibody Aluminum Door Lock
This lock is engineered for those who fear forced entry attempts like kicks or shoves. By using a solid, half-inch unibody aluminum frame, it creates a bridge between your doors that distributes pressure evenly across the structure.
Because it is adjustable, you can get a customized fit for various handle distances. It is a bit bulkier than some competitors, but that extra material is exactly what provides the peace of mind you likely want.
- Lock Type:Unibody Barricade
- Material:Aluminum
- Mounting Style:Handle-to-handle
- Package Quantity:1
- Additional Feature:Half-inch thick frame
- Additional Feature:Designed for home security
- Additional Feature:Sturdy unibody architecture
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Heavy-Duty French Door Barricade
Not every situation requires a key, and that is where this dual-mode device shines. You can choose between keyed and keyless operation, giving you the flexibility to secure your doors quickly when you are home or lock them tight when you head out.
The all-metal build feels substantial, and it serves as a highly visible deterrent to anyone looking at your patio area. Just remember that the keyed mode requires you to keep track of a physical key, so store it somewhere accessible in an emergency.
- Lock Type:Security Barricade
- Material:Metal
- Mounting Style:Handle-to-handle
- Package Quantity:1
- Additional Feature:Heavy-duty build
- Additional Feature:Easy mode switching
- Additional Feature:Universal knob compatibility
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Alise Stainless Steel Gate Latch
If a bulky bar across your handles feels like an eyesore, a stainless steel flip latch might be the answer. This sits on the surface of your doors and provides a heavy-duty locking point that works well for sliding or swinging setups.
It is made from SUS304 stainless steel, which is highly resistant to rust and outdoor elements. You will need a drill to mount this, but the permanent installation offers a cleaner look than temporary barricade bars.
- Lock Type:Flip Latch
- Material:SUS304 Stainless Steel
- Mounting Style:Surface mounted
- Package Quantity:1
- Additional Feature:Anti-theft design
- Additional Feature:Heavy-duty hardware
- Additional Feature:Suitable for wooden doors
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PATLOCK Police Approved Lock
When you want a security solution that meets stringent police-approved criteria, this is your go-to choice. It is designed specifically for doors with internal handles and snaps into place to prevent the lock mechanism from being manipulated from the outside.
It is incredibly easy to use because there are no keys or complex buttons involved. The trade-off is that it only works on specific handle layouts, so check your door configuration against their guidelines before ordering.
- Lock Type:Handle Guard
- Mounting Style:Handle-to-handle
- Package Quantity:1
- Additional Feature:No keys required
- Additional Feature:Fast installation
- Additional Feature:Strong structural integrity
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Adjustable Double Door Security Lock
Finding a lock that fits various knob widths can be a headache, but this adjustable model simplifies the process. It is designed to clamp onto your doors to prevent them from being forced open during a break-in attempt.
The build quality is solid enough to discourage casual intruders while remaining light enough to handle easily. It is an affordable security upgrade for those who do not want to replace their existing door hardware.
- Lock Type:Adjustable Barricade
- Mounting Style:Handle-to-handle
- Package Quantity:1
- Additional Feature:Simple adjustment screws
- Additional Feature:Sturdy metal construction
- Additional Feature:Universal application
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Aluminum Alloy Door Brace
This brace acts as a floor-level barricade that locks your doors from the bottom up. By using a base plate and an aluminum alloy arm, it creates a stubborn obstacle that is difficult for an intruder to overcome.
The dark bronze finish blends in well with many home styles without sticking out like a sore thumb. Note that it requires screw-in mounting, so it is a more permanent security solution than a temporary handle bar.
- Lock Type:Door Brace
- Material:Aluminum Alloy
- Mounting Style:Screw-in base
- Package Quantity:1
- Additional Feature:Adjustable height plate
- Additional Feature:Strong barricade action
- Additional Feature:Fits standard and French doors
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AST Keyed French Door Lockout
If you have small children, this lock provides the extra security layer needed to keep them away from the doors while also acting as a deterrent for outside threats. The inclusion of a snib and cylinder gives you control over how you lock the device.
The matte black finish looks professional on most door colors and is built to withstand force. You will appreciate the added sense of security, especially if your doors lead to a yard or pool area.
- Lock Type:Keyed Barricade
- Material:Metal
- Mounting Style:Handle-to-handle
- Package Quantity:1
- Additional Feature:Snib locking mode
- Additional Feature:Prevents kick-ins
- Additional Feature:Durable construction
Frequently Asked Questions
Do I need a lock for both French doors?
Yes, you should secure both doors to prevent the passive door from being pried open. Even if one door stays closed with a standard latch, a secondary lock acts as a deadbolt anchor that keeps the entire unit rigid.
What is the best way to secure the top and bottom of the doors?
Use heavy-duty slide bolts made of steel. These provide a secondary point of contact that makes it incredibly difficult for an intruder to force the door frame to flex.
Can I use a smart lock on French doors?
Smart locks are tricky because French doors often require specific multi-point hardware. You might need a specialized smart deadbolt that works with an existing multi-point handle set to maintain the look and security of your doors.
How do I know what size lock to buy?
Measure the thickness of your door and the width of the astragal. Most standard doors are 1.75 inches thick, but checking your specific measurements prevents the frustration of buying hardware that is too short for the door frame.
Will a security bar work for French doors?
A security bar can be effective, but it is often cumbersome for daily use. Think of a security bar as a temporary measure for when you are away for long periods rather than a permanent solution for your primary entrance.
